Extra Horses

[stangfreak7]

How much extra horsepower will i get out of an E303 cam and a set of cobra rocker arms? would i be better to put on a new intake and heads first or go with the cam and rocker arms?

[stang_racer20]

probably about 20 hp

[HiFlow5 0]

Originally Posted by stangfreak7

How much extra horsepower will i get out of an E303 cam and a set of cobra rocker arms? would i be better to put on a new intake and heads first or go with the cam and rocker arms?

Forget about the cam unless you are doing heads at the same time. You won't see more then a couple hp by just slapping a cam in there with no other induction mods.

Installing the E cam with .498" lift and Cobra roller rockers (1.7 ratio) would give you an approximate valve lift of .528". The stock heads and valves springs wouldn't fully compliment the extra lift of the cam. You may also float you valves at higher rpms without new stiffer valve springs.

My suggestion is do the heads and cam swap at the same time, then go for the new intake manifold.